The association is Nevada Geothermal Power, that like Solyndra, a now-famous California solar company, is struggling with debt after encountering problems during a usually handling plant.

After a array of technical missteps that are removal Nevada Geothermal’s income reserves, a possess auditor resolved in a filing expelled final week that there was “significant doubt about a company’s ability to continue as a going concern.”

It is a outline that echoes a warning released in 2010 by auditors hired by Solyndra, that benefited from a same Energy Department loan pledge before its collapse in Aug caused a Obama administration good embarrassment.

The parallels between a companies illustrate a risk fundamental in building a purify appetite marketplace in a United States, supervision officials and attention experts say. Indeed, a loan pledge module exists precisely given nothing of these ventures are a certain bet.

There are critical differences between a predestine of Nevada Geothermal and Solyndra, a builder of solar panels that has filed for bankruptcy.

The volume of income a sovereign supervision has during interest with Nevada Geothermal — a loan pledge of $79 million and during slightest $66 million in grants — is many smaller than a $528 million investment in Solyndra. There have been no allegations of indiscretion by Nevada Geothermal or a Blue Mountain, Nev., plant.

Executives of a association demonstrate certainty that they can redeem and contend that a supervision investment is not during risk, notwithstanding a hurdles they face given of a high debt bucket and lower-than-expected appetite outlay during their plant.

“We are here,” pronounced Brian D. Fairbank, a arch executive, who like other association executives works out of Vancouver, British Columbia, where Nevada Geothermal Power has corporate offices. “We’re doing O.K.”

An Energy Department orator pronounced he deliberate a Nevada Geothermal plan a success, observant that a association had a long-term agreement to sell a power.

“The Blue Mountain appetite plant is adult and running, generating clean, renewable appetite and has been consistently creation a loan payments on time and in full,” a spokesman, Dan Leistikow, said.

The association also did not sinecure half a dozen Washington lobbying firms, as Solyndra did, and there is no justification of White House impasse in pulling a project.

But a Nevada Geothermal plan has benefited from a support of a bipartisan collection of Nevada politicians, many particularly Senator Harry Reid, a Democrat and a Senate infancy leader, who has called his home state a “Saudi Arabia of geothermal energy.”

Nationally, geothermal appetite produces usually about 3,000 megawatts of power, a diminutive cut of a inhabitant electricity supply. The Nevada Geothermal plant generates usually 35 megawatts — adequate to offer about 35,000 homes for a year — and a association has usually 22 employees in a state.

But Mr. Reid has taken a nascent geothermal attention underneath his wing, pressuring a Department of Interior to pierce some-more fast on applications to build purify appetite projects on federally owned land and propelling other member of Congress to expand sovereign taxation incentives to assistance build geothermal plants, advantages that Nevada Geothermal has taken advantage of.

“This plan is accurately a form of beginning we need to ensure Nevada creates good-paying jobs,” Mr. Reid pronounced in a matter in Apr 2010, after he visited a company’s Nevada plant. That was dual months before a plan even got redeeming capitulation for a Energy Department loan guarantee.

During a tour, Mr. Reid had a possibility to see electric era apparatus commissioned by a association called Ormat Technology, that is a Nevada Geothermal partner. Ormat’s lobbyist in Washington, Kai Anderson, and one of a company’s tip executives, Paul Thomsen, are former aides to Mr. Reid.

Just final month, again with Mr. Reid’s support, Ormat cumulative a possess Energy Department loan guarantee, value $350 million, to assistance support 3 other Nevada geothermal projects that are approaching to furnish 113 megawatts of power.

Mr. Reid has perceived some support from a industry, in a form of during slightest $43,000 value of debate contributions from a geothermal attention given 2009, according to an investigate of sovereign debate financial records.

Adam Jentleson, a orator for Mr. Reid, pronounced that a senator was unapproachable of his work as an disciple for geothermal appetite and a extended array of other purify appetite projects in his state. But Mr. Jentleson, and a Energy Department spokesman, pronounced Nevada Geothermal association had not received, nor been offered, any special treatment.

“If projects like this did not enclose a certain turn of risk, alongside their huge intensity for formulating jobs and generating purify energy, there would be no need for a bipartisan loan pledge program,” Mr. Jentleson said.

An Obama administration central also forked out that a Nevada Geothermal plan won a eager support of distinguished Republicans in a state, and of a Bush administration.

When Nevada Geothermal Power was finishing construction on a plant in late 2009, there was plenty reason for optimism. Boiling waters are not distant from a aspect during this remote site, 3 hours outward of Reno. It had a 20-year agreement to broach appetite to a state’s largest electric application company.